Tetay-Salgado Sindy, Arriola-Guillén Luis-Ernesto, Ruíz-Mora Gustavo-Armando, Aliaga-Del Castillo Aron, Rodríguez-Cárdenas Yalil-Augusto
Lecture student o the Division of Oral and Maxillofacial Radiology, School of Dentistry, Universidad Científica del Sur, Lima, Perú.
Ph.D. and Associate Professor of the Division of Orthodontics and Division of Oral and Maxillofacial Radiology, School of Dentistry, Universidad Científica del Sur, Lima, Perú.
J Clin Exp Dent. 2021 Apr 1;13(4):e363-e368. doi: 10.4317/jced.57757. eCollection 2021 Apr.
Supernumerary teeth are those that exceed the usual dental formula. There are different classifications depending on their anatomical location, shape and number. The objective of this study was to determine the prevalence of impacted and supernumerary teeth in a sample of panoramic radiographs from three Latin American countries.
A retrospective and cross-sectional study with a quantitative approach, in which the radiographic observation and analysis of 2000 panoramic radiographs, provided by different radiological centers in Peru, Colombia and Bolivia were performed. An examiner, specialized in Stomatology and Oral Surgery, carried out the radiographic analysis to detect the presence of impacted teeth and supernumeraries teeth. All the images were evaluated in a dark room in digital format. The SPSS version 23 package was used for statistical analysis. The Chi-square test was used to determine the association of age, sex, and nationality with the presence of impacted or supernumerary teeth. The level of significance was < 0.05.
The prevalence of impacted teeth was 1.7%, with the upper left canine being the most frequent (58.85%). The prevalence of supernumeraries was 3.15% (76 cases), the most frequent being the mesiodens with 1.7% (34), and Peru showing the highest prevalence of mesiodens. No association was found regarding sex.
The prevalence of impacted teeth evaluated in three recognized radiologic centers from three Latin American countries was low, with the upper left canine being the most frequently impacted tooth. Likewise, the prevalence for supernumerary teeth was also low, with mesiodens having the highest prevalence. Supernumerary tooth, impacted tooth, panoramic radiograph.
多生牙是指超过正常牙列的牙齿。根据其解剖位置、形状和数量有不同的分类。本研究的目的是确定来自三个拉丁美洲国家的全景X线片样本中阻生牙和多生牙的患病率。
采用回顾性横断面定量研究方法，对秘鲁、哥伦比亚和玻利维亚不同放射中心提供的2000张全景X线片进行影像学观察和分析。由一名口腔颌面外科专业的检查者进行影像学分析，以检测阻生牙和多生牙的存在。所有图像均在暗室中以数字格式进行评估。使用SPSS 23版软件进行统计分析。采用卡方检验确定年龄、性别和国籍与阻生牙或多生牙存在之间的关联。显著性水平为<0.05。
阻生牙的患病率为1.7%，其中左上尖牙最为常见（58.85%）。多生牙的患病率为3.15%（76例），最常见的是正中多生牙，患病率为1.7%（34例），秘鲁的正中多生牙患病率最高。未发现性别与患病率之间的关联。
在来自三个拉丁美洲国家的三个认可的放射中心评估的阻生牙患病率较低，左上尖牙是最常发生阻生的牙齿。同样，多生牙的患病率也较低，正中多生牙的患病率最高。多生牙、阻生牙、全景X线片。
